Whakaoti i te y^2-3y+18=(y-6)(y-4)

$$y ^ { 2 } - 3 y + 18 = ( y - 6 ) ( y - 4 )$$

Whakaoti mō y

$$y=\frac{6}{7}\approx 0.857142857$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tuaritanga hei whakarea te y-6 ki te y-4 ka whakakotahi i ngā kupu rite.

$$y^{2}-3y+18=y^{2}-10y+24$$

Tangohia te y^{2} mai i ngā taha e rua.

$$y^{2}-3y+18-y^{2}=-10y+24$$

Pahekotia te y^{2} me -y^{2}, ka 0.

$$-3y+18=-10y+24$$

Me tāpiri te 10y ki ngā taha e rua.

$$-3y+18+10y=24$$

Pahekotia te -3y me 10y, ka 7y.

$$7y+18=24$$

Tangohia te 18 mai i ngā taha e rua.

$$7y=24-18$$

Tangohia te 18 i te 24, ka 6.

$$7y=6$$

Whakawehea ngā taha e rua ki te 7.

$$y=\frac{6}{7}$$